JP2001209997A - Disk driving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To discriminate whether a disk is an MD or a CD before it reaches a roller 11. SOLUTION: First sensors 18 and 20 for detecting an MD are disposed in the vicinity of one end of the front side of a roller 11, and a second sensor 22 for detecting a CD is disposed behind the first sensors 18 and 20, and in the vicinity of the center of the front side of the roller 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk drive device which performs loading by rotation of a roller pressed against a disk.

[0002]

2. Description of the Related Art An MD (Mini Disc) provided with a loading roller and a reproducing head in one housing.
k) and CD (Compact Disk) playback devices are commercially available.

In order to further reduce the size of the head for use in vehicles, it has been considered to use a common MD / CD head (see Japanese Patent Application Laid-Open No. H10-340512).

[0004]

In order to further reduce the size, it has been studied to load MD and CD with one roller. In this case, since the thicknesses of the MD and the CD are different, the insertion positions of the MD and the CD are vertically separated. Then, the rotation direction of the roller is reversed in MD and CD. For this reason, it is necessary to determine whether the MD or CD is an MD or a CD before reaching the roller. In the conventional discrimination method, the discrimination is made after the MD and CD have been pulled in by the roller (see Japanese Patent Application Laid-Open No. 7-6489), and it has been a problem to solve this problem.

[0005]

SUMMARY OF THE INVENTION In view of the foregoing, a disk drive device according to the present invention loads a rectangular storage medium and a circular storage medium by rotating at least one roller. In a disk drive device, a first sensor is disposed near one end in front of the roller and detects the presence or absence of a storage medium, and a first sensor is disposed rearward of the first sensor and near a front center of the roller. A second sensor for detecting the presence or absence of a medium;
If the second sensor does not detect the presence of a storage medium when the second sensor does not detect the presence of a storage medium, it is determined that the detected storage medium is a square storage medium, and the second sensor stores If the first sensor does not detect the presence of the storage medium when the presence of the medium is detected, the first sensor includes a control unit that determines that the detected storage medium is a circular storage medium.

[0006]

Embodiments of the present invention will be described with reference to the drawings. The apparatus of this embodiment is an 8 cm CD (Compact).
Disk) and 12cm CD, MD (Mini D)
isk) is also a 1DIN audio size (German standard) playback device that can be played back by a common head. FIG. 1 is a block diagram of the embodiment. The disk drive device of the present embodiment includes a mechanism (1), a control circuit (2) for controlling the mechanism (1), a ROM (3) storing an operation program of the control circuit (2), and a control circuit (2). And a RAM (4) for storing information necessary for the operation of (1).

FIG. 2 is a plan view showing the structure of the mechanism (1), FIG. 3 is a front view thereof, and FIG. 4 is a right side view thereof. FIG. 5 is a plan view showing a disk insertion position, FIG. 6 is a right side view thereof, and FIG. 7 is a left side view thereof.

FIG. 8 is a front view showing a roller drive unit (14), and FIG. 9 is a left side view thereof. FIG. 10 is a partial left side view showing a method for holding the roller on the left side.

FIG. 11 is a left side view showing the rear switch for the MD. FIG. 12 is a plan view showing a first state of the MD pull-in. FIG. 13 is a plan view showing a second state of the MD pull-in, and FIG. 14 is a left side view of FIG.
5 is a partially enlarged view of a main part of FIG.

FIG. 16 is a plan view showing a third state of pulling in the MD, FIG. 17 is a left side view thereof, and FIG. 18 is a partially enlarged view of a main part of FIG. FIG. 19 is a plan view showing an end state of the MD retraction, FIG. 20 is a front view thereof, and FIG. 21 is a left side view thereof. FIG. 22 is a left side view showing a clamp state of the MD. FIG. 23 is a left side view showing the state of MD discharge.

FIG. 24 is a plan view showing a first state of pulling in a CD. FIG. 25 is a right side view showing the second state of the pulling in of the CD. FIG. 26 is the third drawing of an 8 cm CD.
FIG. 27 is a detailed view of a main part of FIG. 26. FIG. 28 is a plan view showing an end state of the pull-in of the 8 cm CD, and FIG. 29 is a detailed view of a main part of FIG. FIG. 30 is a plan view showing a third state of pulling in a 12 cm CD, and FIG. 31 is a detailed view of a main part of FIG.
FIG. 32 is a plan view showing a fourth state of pulling in a 12 cm CD, and FIG. 33 is a detailed view of a main part of FIG. FIG.
4 is a plan view showing a state where the 12 cm CD has been pulled in, and FIG. 35 is a detailed view of a main part of FIG. FIG. 36 shows C
It is a top view which shows the movement of the turntable for D. FIG.
FIG. 7 is a plan view showing a slide mechanism of the slide plate. FIG. 38 is a right side view showing a clamp state of a 12 cm CD. FIG. 39 is a plan view showing a CD ejection state. FIG.
0 is a diagram showing the reason for movement of the CD turntable (72).

As shown in FIG. 1, the mechanism (1) is an MD or a CD.
Loading / unloading part (1)
0), a clamp unit (40) for holding the loaded MD or CD on the respective turntables (71 in FIG. 5) (72 in FIG. 5), and reading information such as sound from the clamped MD or CD. And a reproducing unit (70).

First, in loading, as shown in FIG. 6, the MD is inserted between a roller (11) and an MD tray (12) disposed below the roller (11), and the CD is loaded on the roller ( 11) and C disposed above the roller (11)
It is inserted between the D guides (13). Thus, M
The roller (11), which is also used for loading D and CD,
It comprises a metal shaft (111) and a cylindrical rubber portion (112) having the shaft (111) as the shaft. As shown in FIGS. 5 and 8, the diameter at the center of the rubber portion (112) is smaller than at both ends. As a result, a disk-shaped CD can be easily inserted, and stable conveyance can be performed by applying a conveyance force to both ends of the CD.

As shown in FIGS. 5 to 8, the roller (11)
Roller holding fitting (14) by roller holding fitting (14)
Is held so as to be swingable about the shaft hole (14a). Then, as shown in FIGS. 5 to 7, the left and right roller springs (15L) (1) engaged with the left and right sides of the roller holding bracket (14).
5R), the roller (11) is urged upward.
As shown in FIG. 6, a link (442) engaged with the shaft (111) of the roller (11) is pivotally supported around a shaft hole (442a) and is supported by springs (15L) and (15R). 6, it is biased in a counterclockwise direction. This link (44
In the counterclockwise rotation of 2), the shaft (4421) provided on the link (442) comes into contact with the upper part of the roller lifting hole (441a) of the slide plate (441) as shown in FIG. Is blocked by Thereby, the position of the roller (11) urged upward is maintained. As shown in FIG. 4, the hole (441a) of the slide plate (441) is slightly larger than the axis (4421) of the link (442), so that the roller (11) can be used as a roller spring (14) (15). ) Can be swung downward against the bias of ()). Before the CD is inserted, the center of the roller (11) and C
The gap between the D guide (13) is 0.5 mm, and the gap between the end of the roller (11) and the CD guide (13) is 0 mm. Accordingly, a CD having a plate thickness of 1.2 mm is loaded on the roller (1).
1) swings downward to enter between the roller (11) and the CD guide (13).

The left and right shaft holes (14b) (14c) of the roller holding fitting (14) into which the roller (11) is fitted.
The right side (14c) is circular, but as shown in FIGS. 10 and 15, the left side (14b) is an arc-shaped long hole whose center is the axis hole (13a). And the roller (1
The left side of 1) is urged downward by a holding spring (16). Thus, the roller (11) can swing upward with the right side as a fulcrum, against the left side against the pressing spring (18). The gap between the roller (11) and the MD tray (11) before the MD is inserted is about 3.5 mm at both ends. Therefore, the actually measured 4.5 mm-thick MD can be displaced upward from the roller (11) by the leftward swing of the roller (11).
Enter between the trays (11). And MD is inserted,
When the roller (11) is inclined with respect to the CD, the MD
The diameter of the rubber portion (112) of the roller (11) is designed so that not only the left end but also the right end of the roller (11) is pressed against the roller (11) (see FIG. 20). Thereby, the roller (11)
Can apply a conveying force to both ends of the MD, and can perform stable drawing and discharging.

As shown in FIGS. 5, 8, and 9, the roller (11)
Is rotated clockwise or counterclockwise as viewed from the right side by a roller drive unit (17). Here, clockwise rotation is a rotation direction in which a CD inserted above the roller (11) is drawn into the apparatus, and left rotation is a rotation direction in which an MD inserted below the roller (11) is drawn into the apparatus. It is. The roller drive unit (17) includes a motor (171), a gear unit (172) for transmitting the rotation of the motor (171), and a belt (173) for transmitting the rotation of the gear unit (172) to the roller (11). Consists of As shown in FIG. 9, the final gear of the gear portion (172) on which the belt is hung is a shaft hole (14a) of a roller holding bracket (14) which is a swing fulcrum of the roller (11).
And concentric. For this reason, even if the roller (11) swings, the tension of the belt (173) does not change, and the rotation of the gear (172) can be transmitted to the roller (11) without any trouble.

As shown in FIGS. 5 to 8, M on which the MD is placed
The D tray (12) has a shaft (121) provided on its left side.
Is in the left shaft hole (14d) of the roller holding bracket (14).
A shaft (122) provided on the right side is a roller holding bracket (1).
4) is fitted into the right shaft hole (14e). Thereby, the MD tray (12) is held to the left of the roller (11), and together with the roller (11), the roller holding bracket (14).
About the shaft hole (14a).

As shown in FIGS. 5 and 11, a front switch (18) for the MD is disposed at the front of the MD insertion section, and a rear switch (19) for the MD is disposed at the rear of the MD insertion section. . As shown in FIGS. 12 and 18, the levers (20) and (21) rotated by the MD switch from OFF to ON, respectively.
As shown in FIG. 1, this signal is output to the control circuit (2). The front switch (18), as shown in FIG.
D is disposed at a position where it is turned on before reaching the roller (11), and as shown in FIG. 19, the center of the MD disk is above the center of the MD turntable (71) of the reproducing unit (70). When transported, that is, when the MD reaches the loading end position, the front switch (1) is turned to the OFF position.
8) is provided. The rear switch (19) is disposed at the rear of the roller (11) and is turned on at a position suitable for the user to take out the MD when the MD is ejected, as shown in FIG.
It is arranged at a position where it switches from to OFF.

As shown in FIG. 5, a front optical sensor (22) for the CD is provided at the front of the roller (11), and a rear optical sensor (23) for the CD is provided at the rear of the roller (11). Is done.
As shown in FIG. 43, each of the light emitting elements includes a light emitting element that emits light and a light receiving element that receives light from the light emitting element. The light emitting element is provided above the CD, and the light receiving element is provided below the CD. Then, as shown in FIG. 1, each optical sensor (2
2) (23) outputs to the control circuit (2) whether or not the light receiving element has received light from the light emitting element. Here, CD
The state where the light from the light emitting element is received by the light receiving element without being blocked by the light sensor is called OFF, and the state where the light from the light emitting element is blocked by the CD and not received by the light receiving element is called ON. Front light sensor (2
2), as shown in FIG. 24, is disposed at a position where the CD is turned on before reaching the roller (11). As shown in FIG. 39, the rear optical sensor (23) is disposed at a position suitable for the user to take out the CD when the CD is ejected and switched from ON to OFF.

As shown in FIG. 24, a pair of left and right 12 cm stoppers (3) are provided on the upper surface of the stopper mounting bracket (30).
1L) and (31R) are the shaft holes (31La) and (31Ra).
Is rotatably supported about the center. By engaging the convex portion (31Rb) provided on the right 12cm stopper (31R) with the long hole (31Lb) provided on the left 12cm stopper (31L), FIG. As shown at 34, the rotation is interlocked. That is, when one of the stoppers (31L) (31R) for 12 cm is about to rotate, and the other stopper (31R) (31L) for 12 cm is locked, the stopper (31L) (31L) for one 12 cm is locked. 31
L) and (31R) do not rotate, and if the other stoppers (31R) and (31L) for 12 cm are allowed to rotate, the other stoppers (31R) and (31L) for 12 cm also rotate.

Left and right 12cm stoppers (31L)
(31R) has stoppers (32L) (3
2R) is rotatably supported about the shaft holes (32La) and (32Ra). And one end is left and right 12c
The other end is 8cm on the stopper (31L) (31R) for m.
The left stopper (32L) for the left 8 cm is turned counterclockwise by the stopper spring (33L) (33R) locked to the stopper (32L) (32R). ) Is rotated clockwise. With this urging force, a stopper (32L) for 8cm
(32Lb) (32Lb) (32L)
Rb) is engaged with the notches (30aL) and (30aR) for locking provided on the mounting bracket (30) for the stopper. In the locked state, the rotation of the stoppers (31L) and (31R) for 12 cm is prevented.

8cm stopper (32L) (32R)
When the lock rotates against the spring (33L) (33R), the lock is released and the stopper (31L) (31R) for 12 cm is used.
Becomes rotatable. As shown in FIGS.
The stopper (32L) for 8 cm has a protrusion (32Lc) to the left of the shaft hole (32La), and the stopper (32R) for 8 cm on the right has a protrusion (32R) to the right of the shaft hole (32Ra).
c). These protrusions (32Lc) (32Rc)
Extend forward, and its length does not come into contact with the conveyed 8 cm CD as shown in FIGS.
As shown in FIG. 7, the length is in contact with the conveyed 12 cm CD. Thus, even if an 8 cm CD is transported,
Since the stoppers (32L) and (32R) for cm do not rotate, the lock is not released. When the 12 cm CD is transported, the stoppers (32L) and (32R) for 8 cm rotate and release the lock, and the 12 cm CD is released. The stopper for rotation rotates.

The left 12 cm stopper (31L) has an 8cm switch lever (34) in its shaft hole (34).
It is rotatably supported about a). One end on the left 12
The switch spring (3), the other end of which is locked to a stopper (31L) for 8 cm and the other end to a lever (34) for 8 cm switch.
According to 5), the turning force is applied to the lever (34) for the 8 cm switch clockwise. This rotation is prevented by the projection (30b) provided on the mounting bracket (30) for the stopper. The urging force of the switch spring (35) is applied to the left 12cm stopper (31L) counterclockwise through the 8cm switch lever (34) and to the right 12cm.
For rotating the stopper (31R) clockwise. 8c at one end of lever (34) for 8cm switch
A contact portion (34b) for contacting the m disk is provided, and a pressing portion (34c) for pressing a switch (36) for 8 cm is provided on the other end side.

As shown in FIGS. 24 and 34, the left 12 cm
A switch (37) for 12 cm is provided so that when the stopper (31L) is turned to a predetermined position, it is switched from OFF to ON.

The present apparatus is a 1-DIN audio-size reproducing apparatus that can read MD and CD with a common head. For this purpose, as shown in FIG. 40, a turntable (71) for MD and a turntable (7) for CD are used.
During the period 2), a predetermined dimension L1 in which the head (73) can move.
(About 73 mm). Then,
The width of the area occupied by the clamped MD and CD must be equal to or greater than a predetermined dimension L2 (about 167 mm). On the other hand, 1 DIN audio size (width 178 mm x height 5
0 mm), the width of the MD and CD insertion slot must be less than or equal to a predetermined dimension L3 (about 127 mm). Here, L2> L3, and L2 cannot be the width of the MD and CD insertion slot. For this reason, as shown in FIG. 36, at the time of reproduction in the CD mode, the reproduction unit (7) including the turntables (71) (72) and the head (73).
0) is rotated counterclockwise about the shaft hole (74), and then clamped. At the time of reproduction in the MD mode, the clamp is performed without rotating the reproduction unit (70).

Since the rotation of the reproducing section (70) and the operation of the clamp are not essential parts of the present invention, the description will be simplified.
The rotation of the reproducing section (70) is performed by the clamp section (40). The clamp unit (40) includes a motor (41) whose rotation is controlled by the control circuit (2) and a motor (4).
The gear portion (4) transmitting the rotational force of 1) to the drum (431)
2) and the drum (431), the reproducing unit (70) is rotated at a predetermined timing, and the slide plate (44) is rotated.
1) A variable portion (43) for sliding the unit, and a crank mechanism (44) including the slide plate (441) and clamping an MD or a CD.

As shown in FIG. 36, the drum (431) has a circumferential groove (431) partially extending toward the center thereof.
a), the axis (4321) in the groove (431a) enters a portion extending toward the center when the drum (431) rotates in a predetermined range. At this time, the link (432) holding the shaft (432) rotates around the shaft hole (432a). The link (432) rotates the reproducing unit (70) via the spring (433).

Further, as shown in FIG.
1) is provided with a spiral groove (431b) at the bottom, and when the drum (431) rotates, the shaft (4) in the groove (431b) is rotated.
341) enters a portion extending toward the center. At this time, the link (434) holding the shaft (4341) rotates around the shaft hole (434a). This link (434)
Is rotated, the shaft (43) fixed to the link (434) is rotated.
The slide plate (441) engaged with (42) slides. As shown in FIG. 4, the slide plate (441) has a roller elevating hole (441a) in which a roller link (442) shaft (4421) is fitted, and a stopper mounting bracket (30) shaft (301). ) Is fitted into the disk pressing elevating hole (441b) and the disk cover mounting bracket (44).
Two shafts (4) for the disc cover abutting on the slope of (3)
41c) and (441d). The mounting bracket (443) for the disk cover is rotatably supported about a shaft hole (443a). The mounting bracket (443) is a bracket to which a disk cover (not shown) is mounted, and the disk cover opens and closes the disk insertion opening by rotating the mounting bracket (443). As shown in FIG. 6, the mounting bracket (30) for the stopper is rotatably supported around a shaft hole (30c), and a disk pressing portion (444) is provided in front of the mounting bracket (30). With this configuration, when the slide plate (441) slides, the shaft (4421) for the roller is set in the shaft hole (442a).
, The roller (11) moves up and down, the shaft (301) of the mounting bracket (30) swings around the shaft hole (30c), and the disc pressing portion (444) moves up and down, so that the disc cover is rotated. The two mounting shafts (441c) and (441d) move back and forth, so that the mounting bracket (443) of the disk cover rotates about the shaft hole (443a) to open and close the disk insertion opening.

In the above-mentioned rotation of the reproducing unit (70) and the operation of clamping, in the MD mode, the control circuit (2) controls the drum (431) of the changing unit (43) from the initial position to the plan view. Rotated counterclockwise as viewed more. Then
The slide plate (441) is slid backward by the moving portion (43), and the MD is clamped by the crank mechanism portion (44). Then, when the drum (431) is rotated clockwise from the position of the clamp, the clamp is released.

In the CD mode, the drum (431) is rotated clockwise from the initial position under the control of the control circuit (2). Then, the reproducing unit (70) moves the position of FIG.
Is rotated clockwise to the position of the clamp mechanism (4).
4) The slide plate (441) is slid forward,
The CD is clamped. Then, when the drum (431) is rotated counterclockwise from the position of the clamp, the clamp is released, and then the reproducing unit (70) is rotated counterclockwise to return to the initial position.

Next, the operation of the control circuit (2) will be described.
FIGS. 41 and 42 are flowcharts showing main operations of the control circuit (2).

In FIG. 41, the initial state where MD and CD are not inserted is the front and rear switches (18) for MD.
(19), 8 cm and 12 cm switches (36) and (37) for CD, and front and rear optical sensors (2
2) (23) are all OFF (S1). In this initial state, the control circuit (2) determines whether the front switch (18) for MD is turned on (S2) and whether the optical sensor (22) for CD is turned on. (S21) is monitored.

As shown in FIG. 11, when the MD is inserted between the roller (11) and the MD tray (12) by the user, as shown in FIG.
Before touching 1), the front optical sensor (22)
In the FF state, the front switch (18) is turned off by MD.
N (Y in S2). Then, the control circuit (2) sets the MD
The motor (171) for the roller is rotated in the direction in which the lower side of the roller (11) is retracted (in FIG. 14, the direction in which the roller (11) rotates in the counterclockwise direction) is recognized (S
3).

As described above, the gap between the roller (11) into which the MD is inserted and the MD tray (12) is slightly smaller than the thickness of the MD. The roller (11) is movably held on the right side as a fulcrum and on the left side against the pressing spring (16). Therefore, when the user inserts the MD until the roller (11) comes into contact with the roller (11) while the roller (11) is rotating, the rotational force of the roller (11) causes the roller (11) to rotate as shown in FIGS. To the left of the holding spring (1
Lift up against 6). And presser spring (16)
As a result, the roller (11) presses the MD and conveys the MD into the apparatus.

As shown in FIG. 18, when the MD is transported for a predetermined distance, the rear switch (19) is turned on (S).
4). As shown in FIG. 19, when the MD is further transported by a predetermined distance, the front switch (18) returns to OFF (Y in S5). At this time, the rear switch (19) remains ON. When the control circuit (2) detects this state, it determines that the loading is completed, and stops the rotation of the roller (11) (S6). Then, the control circuit (2) controls the clamp unit (40) in the MD mode as described above, and
Is clamped (S7). As shown in FIG. 22, at the time of clamping, the rear switch (19) is turned off.

In FIG. 41, the control circuit (2) is EJE
When the signal of the CT request is received (S8), as described above, M
The clamp unit (40) is controlled in the D mode to release the clamp of the MD (S9). When the clamp is released, the state returns to the state shown in FIG. 21 and the rear switch (19) is turned on again.
become. Then, as shown in FIG. 23, the control circuit (2) rotates the roller (11) in the direction opposite to the step S3 until the rear switch (19) is turned off (S10 to S12).

When the user inserts the CD between the roller (11) and the CD guide (13) as shown in FIG. 6, the CD is inserted into the roller (11) as shown in FIG.
Before touching, the front switch (18) is turned off.
, The front optical sensor (22) is turned on (S2).
1 Y). Then, the control circuit (2) recognizes the CD mode, and activates the roller motor (171) in the direction of pulling in the upper side of the roller (11) (in FIG. 25, in the direction in which the roller (11) rotates counterclockwise). It is rotated (S22).

As described above, the gap between the roller (11) into which the CD is inserted and the CD guide (13) is slightly smaller than the thickness of the CD. Further, the roller (11) is held swingably downward against the left and right roller springs (15L) (15R). Therefore, when the user inserts the CD until the roller (11) comes into contact with the roller (11) while the roller (11) is rotating, the roller (11) is rotated by the rotational force of the roller (11) as shown in FIG. Spring (15L)
Go down against (15R). Then, the roller (11) presses the CD by the roller springs (15L) (15R) and conveys the CD into the apparatus.

A case where the CD to be conveyed is an 8 cm CD will be described. When the 8 cm CD is conveyed by a predetermined distance, the rear optical sensor (23) is turned on (S23). Further 8c
The conveyance of the mCD proceeds, and the state of FIGS.
In the state of 29, the 8 cm CD rotates the lever (34) for the 8 cm switch counterclockwise against the urging force of the spring (35). Then switch for 8cm (3
6) is turned ON (Y in S24). This allows
The control circuit (2) recognizes that the inserted one is an 8 cm CD, and sets the gain for rotating the motor (76) of the CD turntable to be 8 cm (S25). Also, it is determined that the loading is completed, the rotation of the roller is stopped (S26), and the process proceeds to step S27. On the other hand, as described above, even if the 8 cm CD is transported, the locks of the stoppers (31L) and (31R) for 12 cm are not released because the stoppers (32L) and (32R) for 8 cm do not rotate. Therefore, a stopper (32L) (32R) for 8cm
Does not move, and the conveyance of the 8 cm CD is prevented.

Incidentally, even if the user inserts the 8 cm CD off the center, the left and right 12 cm stoppers (31 L) and (31 R) will not move unless the locks are simultaneously unlocked. 8) CD was moved to the center for FIG.
6 and 27.

The case where the CD to be transported is a 12 cm CD will be described. When a 12 cm CD is transported a predetermined distance,
The rear optical sensor (23) is turned on (S23). When the transport of the 12 cm CD further proceeds, as shown in FIGS. 30 and 31, the stopper (32L) (3
Press 2R). Thereby, as described above, the stoppers (32L) and (32R) for 8 cm are rotated, and the stoppers (31L) and (31R) for 12 cm are unlocked,
As shown in FIGS. 32 and 33 and FIGS.
Stoppers (31L) and (31R) are rotated.

At this time, the lever (34) for the 8cm switch pivotally supported by the left stopper (31L) for 12cm is also rotated together with the stopper (31L) for the left 12cm together with the shaft hole (34a). The 8 cm switch (36) is not turned on by the 8 cm switch lever (34) to move.

The stopper (31L) (31L) for 12cm
When R) rotates to the state shown in FIGS. 34 and 35, the 12 cm stoppers (31L) and (31R) switch the 12 cm switch (37) ON (Y in S28). As a result, the inserted control circuit (2) is a 12 cm CD.
Is recognized, and the turntable motor (7
Set the gain for rotating 6) for 12 cm (S2
9). Also, it is determined that the loading is completed, the rotation of the roller is stopped (S26), and the process proceeds to step S27.

Incidentally, even if the user inserts the 12 cm CD out of the center, the stoppers (31L) and (31R) for the left and right 12 cm do not move unless the locks are unlocked at the same time. 30 and 31 are obtained.

In step S27, that is, when the loading of the CD is completed, the control circuit (2) controls the clamp section (40) in the CD mode as described above, and FIG.
As described above, the reproducing unit (70) is rotated counterclockwise to
The D turntable (72) is moved to the center of the CD, and the CD is clamped as shown in FIG. 38 (S27).

In FIG. 42, the control circuit (2) is EJE
Upon receiving the CT request signal (S30), as described above,
The clamp unit (40) is controlled in the CD mode to release the clamp of the CD (S31). And the control circuit (2)
As shown in FIG. 39, the optical sensor (23) at the rear
Until F, the roller (11) is rotated in the direction opposite to that of step S22 (S32 to S34).

[0047]

As described above, in the present invention, the rotation direction of the roller (11) is different between the MD and the CD. For this purpose, it is necessary to determine whether the disc is an MD or a CD before reaching the roller (11). Therefore, as shown in FIG. 5, a front switch (18) and a lever (20) for pushing the switch are arranged near the front left of the roller (11), and the front optical sensor (22) is connected to the front switch. It was arranged behind the switch (18) and near the front center of the roller (11).

With such an arrangement of the disk detector,
When a square MD is inserted, the MD is a roller (11).
Before reaching, and the front optical sensor (22) is OFF
In this state, the front switch (18) is turned ON. When a circular CD is inserted, the switch (18) at the front of the front of the CD is turned off before the CD reaches the roller (11).
In the state of F, the optical sensor (22) is turned on. Then, before the disk reaches the roller (11), the MD or C
D can be determined.

The operation of the MD differs from that of the CD not only in the direction of rotation of the rollers, but also in the operation of the head moving mechanism and the operation of the disk reproducing circuit, for example. The present invention also has an effect that it is possible to determine whether the operation is an MD or a CD at an early stage.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a main part of the present invention.

FIG. 2 is a plan view of the mechanism shown in FIG. 1;

FIG. 3 is a front view of the mechanism.

FIG. 4 is a right side view of the mechanism.

FIG. 5 is a plan view showing a disc insertion position.

FIG. 6 is a right side view showing a disc insertion position.

FIG. 7 is a left side view showing a disc insertion position.

FIG. 8 is a front view showing a driving unit of a roller.

FIG. 9 is a left side view illustrating a driving unit of the roller.

FIG. 10 is a partial left side view showing a method for holding the roller on the left side.

FIG. 11 is a left side view showing a rear switch for the MD.

FIG. 12 is a plan view showing a first state of MD pull-in.

FIG. 13 is a plan view showing a second state of the MD pull-in.

FIG. 14 is a left side view showing a second state of the MD pull-in.

FIG. 15 is a partially enlarged view of a main part of FIG. 14;

FIG. 16 is a plan view showing a third state of the MD pull-in.

FIG. 17 is a left side view showing a third state of the MD pull-in.

18 is a detailed view of a main part of FIG.

FIG. 19 is a plan view showing an end state of MD pull-in.

FIG. 20 is a front view showing an end state of the pull-in of the MD.

FIG. 21 is a left side view showing an end state of the MD pull-in.

FIG. 22 is a left side view showing a clamp state of the MD.

FIG. 23 is a left side view showing a state in which the MD is discharged.

FIG. 24 is a plan view showing a first state of pulling in a CD.

FIG. 25 is a right side view showing a second state of CD pull-in.

FIG. 26 is a plan view showing a third state of pulling in an 8 cm CD.

FIG. 27 is a detailed view showing a main part of FIG. 26;

FIG. 28 is a plan view showing an end state of the pulling in of the 8 cm CD.

FIG. 29 is a detailed view showing a main part of FIG. 28;

FIG. 30 is a plan view showing a third state of pulling in a 12 cm CD.

FIG. 31 is a detailed view showing a main part of FIG. 30;

FIG. 32 is a plan view showing a fourth state of pulling in a 12 cm CD.

FIG. 33 is a detailed view showing a main part of FIG. 32;

FIG. 34 is a plan view showing an end state of pulling in a 12 cm CD.

FIG. 35 is a detailed view showing a main part of FIG. 34;

FIG. 36 is a plan view showing movement of a CD turntable.

FIG. 37 is a plan view showing a slide mechanism of the slide plate.

FIG. 38 is a right side view showing a clamp state of a 12 cm CD.

FIG. 39 is a plan view showing a CD ejection state.

FIG. 40 is a plan view showing the reason for moving the CD turntable.

FIG. 41 is a flowchart showing a main operation of the present invention.

FIG. 42 is a flowchart showing a main operation of the present invention.

FIG. 43 is a plan view showing a position of an optical sensor in a conventional disc determination.

FIG. 44 is a side view showing a position of an optical sensor in a conventional disc determination.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mechanical 2 Control circuit 10 Loading part 11 Roller 111 Roller shaft 112 Roller rubber part 12 MD tray 13 CD guide 14 Roller holding bracket 14a Roller holding bracket shaft hole (center of swing) 14b Roller holding bracket shaft hole Roller left) 14c Roller holding bracket shaft hole (roller right) 14d Roller holding bracket shaft hole (MD tray left) 14e Roller holding bracket shaft hole (MD tray right) 15L Left roller spring 15R Right roller spring Reference Signs List 16 Pressing spring 17 Roller driving unit 171 Roller driving unit motor 172 Roller driving unit gear unit 173 Roller driving unit belt 18 MD front switch 19 MD rear switch 20 Lever (front switch) 21 Lever (front switch) 22 Front optical sensor for CD 23 Back light sensor for CD 30 Mounting bracket for stopper 31L Stopper for 12cm (left) 31La Shaft hole for 12cm stopper (left) 31R Stopper for 12cm (right) 31Ra Stopper for 12cm (right) Shaft hole 32L Stopper for 8cm (left) 32La 8cm stopper (left) Shaft hole 32Lb Lock stopper of 8cm stopper (left) 32Lc Projection of stopper (left) for 8cm 32R Stopper for 8cm (right) Shaft hole of stopper (right) for 32Ra 8cm Lock jaw of stopper (right) for 32Rb 8cm 32Rc Projection of stopper (right) for 8cm 33L Spring for stopper (left) 33R Spring for stopper (right) 34 8cm Lever for switch 34a Shaft hole of lever for 8cm switch 5 Spring for Switch 36 Switch for 8cm 37 Switch for 12cm 40 Clamp 41 Motor of Clamp 42 Gear of Clamp 43 Fluctuation of Clamp 431 Drum of Fluctuation of Clamp 44 Crank Mechanism 441 Crank Mechanism Slide plate 442 Link of crank mechanism 70 Playback unit 71 MD turntable 72 CD turntable 73 Head 74 Shaft hole of playback unit 75 MD turntable motor 76 CD turntable motor

Claims (3)

[Claims] 1. A disk drive device for loading a storage medium having a rectangular outer shape and a storage medium having a circular outer shape by rotating at least one roller, wherein the storage medium is disposed near one end in front of the roller. A first sensor for detecting the presence or absence of a storage medium, a second sensor disposed behind the first sensor and near the front center of the roller and for detecting the presence or absence of a storage medium, and wherein the first sensor is a storage medium. If the second sensor does not detect the presence of the storage medium when detecting the presence of the storage medium, it is determined that the detected storage medium is a rectangular storage medium, and the second sensor detects the presence of the storage medium. When the first
And a control unit for determining that the detected storage medium is a circular storage medium if the sensor does not detect the presence of the storage medium. 2. The control device according to claim 1, wherein the control unit controls the rotation direction of the loading roller to be different between when the storage medium is determined to be a square storage medium and when the storage medium is determined to be a circular storage medium. 2. The disk drive device according to 1. 3. The disk drive according to claim 1, wherein the rectangular storage medium is an MD, and the circular storage medium is a CD.